EP2495505A2 - Air inlet or outlet with actuated closure and method for actuating a closure - Google Patents

Abstract

The apparatus (1) has cover (8) for closing the air inlet (7). An electrical operating element (13) is provided in actuator device (12) for operating the cover between open and closed positions. A fixing device (14) separately fixes the cover in open position without maintenance of electrical energization of the actuator device to electrical operating element. An independent claim is included for method for actuating cover of air inlet.

Description

The invention relates to an air inlet or outlet, with an air passage opening, which is associated with a closure, which can be brought into an open and a closed position by means of at least one operating element driven by an electrical actuating device.

An air inlet or outlet of the type mentioned is known. He has a louvered air passage opening. The lamellar closure can be displaced by means of an actuating device in an open position or in a closed position. For this purpose, the actuating device has a Bimetallaktuator, which is associated with an electrical heating resistor. If the heating resistor is energized, the bimetallic actuator, which moves the lamellae of the lamellar closure from the closed position into the open position, curves with an operating element. The known Luftein- or -auslass an electric fan is assigned, which promotes air through the open air passage opening. In order to prevent the lamellar shutter from closing again when the fan is running, the bimetallic actuator must be continuously heated. If the fan is turned off, so also the electrical heating resistor is turned off, causing the Bimetallaktuator cools and returns to its original position, whereby the operating member is displaced and thereby returns the lamellar shutter in the closed position. The known air inlet or outlet has a relatively high electrical energy consumption, since the electrical heating resistor must be operated permanently to keep open the lamella closure.

Furthermore, an air inlet or outlet is known, the closure of which is assigned to an air passage opening can be brought into the open or closed position by means of an electric motor and a displacement device driven by the electric motor. This configuration requires a high design effort and leads to correspondingly high costs.

The invention has for its object to provide an air inlet or outlet that works energy efficient and has a simple low-cost construction.

This object is achieved in an air inlet or outlet of the type mentioned by a shutter without maintaining the electrical energization of the actuator in the open position holding, the actuator and the operating member separate fixing. According to the invention thus serves the electrical actuator and the control element only the displacement of the shutter in the open position or in the closed position. The open position is fixed independently of the actuating device and the operating member by a separate fixing device which holds the shutter in the open position, without it being necessary to keep open the electrical energization of the actuator. As a result, electrical energy is saved. The fixing device may be a very simple device. So it is sufficient in particular to provide only a rear handle to a stop surface of the closure, so that the latter is fixed in the open position. The arrangement is preferably made such that after the generation of the rear grip, the fixing device for maintaining the fixation requires no electrical energy.

A further development of the invention provides that the fixing device has its own electric drive for bringing about its fixing position or release position, or is driven directly or indirectly by the actuating device. The own electric drive must be energized only to bring about the fixing position or bringing the release position, so that the energy consumption is negligible. Alternatively, the actuator can be used to drive the fixing device with. It is thus possible, for example, for a crossbar to be displaced by it, which holds the closure in the open position. To bring about the release position, the actuator displaces not only the closure, but also the mentioned latch. In addition to the above direct driving of the fixing device by means of the actuating device and an indirect driving is possible, in particular when the branching movement of the shutter energy is diverted to actuate the fixing device.

It is particularly advantageous if, according to a development of the invention, the fixing device is a fixing device operating on the "ballpoint pen principle" or on the "locking principle". A working according to the "ballpoint pen" fixing device is transferred by means of a driven by the electrical actuator component in a detent position - without the supply of energy is required - as long as is maintained until by renewed, taking place by means of the actuator actuation the locking position leave again becomes. A fixing device operating according to the "locking principle" has a displaceable bolt which, in the open position of the closure, creates a rear grip, as a result of which the open position of the closure is fixed. If the closure is to be closed, then it is first necessary to remove the rear grip by bolt displacement. Only for the latch operation requires such a fixing energy, but not in the time in which the latch is in the locked position or Endriegelungsstellung.

It is advantageous if the actuator for opening the shutter and for closing the shutter causes the same movement of the operating member. Consequently, the actuator can be set up very easily, since they always displaced the operating member in the same manner, regardless of whether they should open the closure or close the closure. Accordingly, in the case of the actuator as a bimetallic device provided with heating resistor, it suffices to energize the heating resistor to open the shutter. If this is open, the fixing device ensures that the open position is maintained so that the heating resistor can be switched off. If the closed position of the closure be brought about, the heating resistor is energized again, whereby the operating member performs the same sequence of movements as in the opening operation, thereby unlocking the preferably acting on the "ballpoint pen" fixing causes and - after switching off the heating resistor - a shift of Closure in the closed position allows.

In particular, a development of the invention provides for an electronic timing circuit for at least one preferably adjustable default time of the electrical current supply of the actuating device. This is a very simple and inexpensive measure, since the current is independent of the actual time required the opening displacement of the closure is specified. The arrangement is preferably to be made such that the adjustable default time of the energization of the actuator is greater than the time required for the opening displacement of the closure.

It is advantageous if the closure has at least one air flap, in particular a plurality of louvers designed as louvers. If several slats are present, this is called a slat closure.

In particular, the actuator causes a linear actuation of the actuator, whereby a simple construction is given.

According to preferred embodiments of the invention it is provided that the actuating device has at least one Bimetallaktuator with at least one electric heating element, at least one electromagnetic actuator or at least one electric linear drive. The Bimetallaktuator with at least one electric heating element has already been discussed above. If an electromagnetic actuator is provided, it may, for example, be an electrical coil with whose electromagnetic field an armature can be displaced in order to open or close the shutter. By means of an electric linear drive can also cause a closure opening or closing.

A development of the invention provides an electronic control circuit which has at least one sensor for detecting the position of the closure. The sensor allows the detection of the current position of the shutter, so its closed position, open position and / or the detection of at least one intermediate position, so that in certain operating situations or special situations (for example, in case of electrical power failure) can always be a safe operation management of Luftein- or -auslasses. In particular, it is provided that the air inlet or outlet is formed with at least one electric fan. If the fan is put into operation, the shutter opens, allowing air to be conveyed through the air passage opening. If the fan is turned off, so also closes the shutter, ie, the air passage opening is closed.

Further advantages of the invention will become apparent from the dependent claims.

The invention further relates to a method for actuating a closure of a Luftein- or -auslasses, in particular according to one or more of the preceding embodiment (s), wherein the closure by means of at least one driven by an electric actuator operating member in an open and a closed position displaced is, wherein the following steps are provided for bringing about the open position of the closure: electrical energization of the actuator for driving the operating member to shift the shutter in the open position, the actuator and the operating member separately successful fixing the open position of the shutter and off the energization of the actuator. The fixing which takes place separately for the actuating device and the operating element means that there are independent means for fixing which are not serve the displacement of the closure or the operating member.

A development of the method provides that the operating member is moved to open the shutter from a rest position in a Verlagerungsendstellung and that after fixing the open position of the shutter, the operating member is moved back from the actuator to the rest position in particular energization free. This return movement is preferably given when the actuator has the at least one Bimetallaktuator with the at least one electric heating element, as by cooling the Bimetallaktuators this on the one hand energization-free and on the other hand returns to its normal position, so returns the control member in the rest position.

Further, it is advantageous if the operating member by the actuating device for closing the closure from the rest position in the Verlagerungsendstellung and after the cancellation of the fixation of the closure back to the rest position and under transfer of the closure in the closed position, in particular energization free, is moved. This process is preferably given when a fixing device is used, which operates on the "pen principle".

The actuating device is electrically energized for bringing about the open position and the closed position of the closure for a predetermined time. This time is preselected and preferably independent of the time required for the movement of the shutter in the open position or in the closed position. Finally, it is advantageous if the respective position of the closure is sensed and an electrical control circuit the sensed closure position is transmitted. As a result, there is a query possibility for the control circuit, ie, it can take into account the respectively determined closure position in its operational management.

Figur 1

eine perspektivische Ansicht von vorne eines Lufteinlasses beziehungsweise Luftauslasses mit Ventilator bei teilweise geöffnetem Gehäuse und mit einem als Lamellenverschluss ausgebildeten, geschlossenen Verschluss,

Figur 2

die Ansicht der Figur 1 bei geöffnetem Lamellenverschluss,

Figur 3

den Lufteinlass der Figur 1 aus einem geänderten Blickwinkel,

Figuren 4 bis 6

jeweils eine schematische Darstellung des Lamellenverschlusses des Ausführungsbeispiels der Figur 1 in Seitenansicht und in verschiedenen Stellungen,

Figur 7

eine schematische Darstellung eines Teils einer Fixiervorrichtung des Luftauslasses der Figur 1,

Figuren 8 und 9

Detailansichten des Lufteinlasses der Figur 1,

Figur 10

ein Blockdiagramm,

Figur 11

ein Diagramm,

Figur 12a bis 12c

eine Tabelle zu verschiedenen Betriebszuständen des Lufteinlasses der Figur 1,

Figuren 13 und 14

ein weiteres Ausführungsbeispiel eines Lufteinlasses beziehungsweise Luftauslasses mit einer andersartigen Fixiervorrichtung und

Figuren 15 bis 20

noch ein weiteres Ausführungsbeispiel eines Lufteinlasses beziehungsweise Luftauslasses mit einer andersartigen Fixiervorrichtung.

The drawings illustrate the invention by means of exemplary embodiments, namely:

FIG. 1

a perspective view from the front of an air inlet or air outlet with fan at partially opened housing and with a designed as a lamellar shutter, closed closure,

FIG. 2

the view of FIG. 1 with open lamellar closure,

FIG. 3

the air intake of the FIG. 1 from a different perspective,

FIGS. 4 to 6

in each case a schematic representation of the lamellar closure of the embodiment of FIG. 1 in side view and in different positions,

FIG. 7

a schematic representation of a part of a fixing device of the air outlet of FIG. 1 .

FIGS. 8 and 9

Detail views of the air intake of the FIG. 1 .

FIG. 10

a block diagram,

FIG. 11

a diagram,

FIGS. 12a to 12c

a table on different operating states of the air intake of the FIG. 1 .

FIGS. 13 and 14

a further embodiment of an air inlet or air outlet with a different fixing device and

FIGS. 15 to 20

Yet another embodiment of an air inlet or air outlet with a different fixing device.

The FIGS. 1 to 3 show an air inlet 1, which has a housing 2, which has a first region 3 and a second region 4. The first region 3 is substantially cuboid, while the second region 4 is tubular. Within the second area 4 of the housing 2 there is a fan 5, which has an electric motor 31 and an impeller 6, to which an air passage opening 7 in the first area 3 of the housing 2 is assigned. The air passage opening 7 is to be opened or closed by means of a closure 8, the closure 8 being designed as a lamellar closure 9 with lamellae 10, which can be pivoted about axes of rotation 11. In the first region of the housing 2, an actuating device 12 is accommodated, which is electrically operated and which has an operating member 13 which actuates the slat closure 9. Further, a fixing device 14 is provided which serves to fix the shutter 9 in the open position. Finally, inside the first area 3 of the housing 2 accommodated an electronic control circuit 15, which serves the operational management of the air inlet 1.

If the fan 5 is turned on, then the lamellar shutter 9 opens and, according to arrow 16 (FIG. FIG. 2 ) sucked 5 air from the fan and blown through the open lamellar shutter 9, for example, in a room or the like (arrow 17). If the fan 5 is switched off again, the lamellar closure 9 also closes. Of course, it is also conceivable that the fan 5 in another embodiment, one with respect to the FIG. 2 having reverse air conveying direction. Furthermore, it is not necessary for the object of the invention that a fan is present, since the invention also embodies in an air outlet or air inlet, which is associated with no air conveying device.

According to the FIGS. 1 to 3 The electrical actuating device has a strip-shaped bimetallic actuator 18 to which an electrical heating element 19 is assigned. The electric heating element 19 is connected to the electric control circuit 15 via electric wires. One end of the Bimetallaktuators 18 is firmly clamped and the other end forms an operating member 13 which is connected to a slidably guided spool 20. The slats 10 have control arms 21 which are movably coupled to the spool 20. Between a shoulder 22 of the spool 20 and a shoulder 23 of the housing 2, a helical compression spring 24 is arranged, which supports a closing movement of the slat closure 9. This helical compression spring 24 is optional, so it does not necessarily exist. Is the electric heating element 19 to an electrical voltage is placed, the bimetallic actuator 18 is heated, which thereby curves and the spool 20 from the lower position according to FIG. 1 in the upper position according to FIG. 2 shifted in the longitudinal direction. In this case, the control arms 21 are rotated, whereby the slats 10 reach the open position. If the electric heating element 19 is turned off, the bimetallic actuator 18 returns to its original position, wherein he takes the spool 20 (possibly supported by the helical compression spring 24), the control arms 21 turn back and the slats 10 reach the closed position.

The fixing device 14 is a working according to the "ballpoint pen" fixing device having a support arm 25 which is pivotally connected to the spool 20 and biased in the direction of a control cam 26. The control cam 26 is fixed to the housing and recessed and formed as a so-called "heart curve". Schematically, she is in the FIG. 7 shown. It has different height levels. In area a is the lowest point, the curve increases in direction b. At b is the highest point, which then leads to c via a step, where c is below b. Furthermore, there is a region d, which lies below c and is separated by a step from c. The region e lies below the region d and is likewise separated by a step, the curve rising from e to f and f being above a, ie between f and a, a step is again formed. A control pin 38 of the support arm 25 passes through the operation of the lamellar closure 9 by means of the electrical actuator 12, the heart-shaped cam 26 and starting at the point a (closed position of the slats 10). If the spool 20 for the opening movement of the slats 10 moves, the holding arm 25 is taken accordingly, whereby the control pin 38 runs from a via b to c. Now, the electric actuator 12 is put out of action, there is a slight backward movement of the spool 20, whereby the control pin 38 passes from the point c to the point d. He can not switch from c to b, because here is the mentioned stage in between. At the point d, the control pin 38 is held, that is, on the support arm 25 of the spool 20 is fixed so that the slats 10 maintain their open position energy-free. From the FIG. 7 It can be seen that in the transition from b to c, the lamellae are first "overstretched", ie moved beyond the open position, and that then the minor return movement takes place (from c to d), which corresponds to the open position of the lamellae. If now the shutter 8 are closed again, the electric actuator 12 will move the spool 20 back to "overstretch", whereby the control pin 38 of the support arm 25 changes from d to e. Now, if the electric actuator 12 is turned off, the control pin 38 changes from e to f to a, whereby the slats 10 are returned to their closed position. Since there is once again a step between f and a, the control pin 38 will again move from a to b and not from a to f in the case of a new opening operation.

In the FIG. 4 the closure 8 has its closed position. To open the actuator 12 moves the spool 20 in the direction of arrow 27, wherein in FIG. 5 the maximum displacement position (overstretch position) is shown. To reach the open position according to FIG. 6 is from the overstretched position of FIG. 5 a minor return movement (arrow 28) of the spool 20 performed so that the fully opened state of the fins 10 is reached. The return movement results from the heart shape of the cam 26th

From the FIGS. 4 to 6 It can also be seen that the electronic control circuit 15 has a sensor 29, which serves to detect the position of the shutter 8. The sensor 29 cooperates with a counter element 30, which is located in particular in one of the lamellae 10, wherein a comparison of FIGS. 4 to 6 It will be apparent that when the blades 10 are displaced, the counter element 30 is guided past the sensor 29, wherein in the fully open position according to FIG FIG. 6 the counter element 30 is opposite to the sensor 29. The sensor 29 is preferably designed as a Hall sensor and the counter element 30 is preferably a permanent magnet.

The FIGS. 8 and 9 clarify once again the fixation of the closure 8 with the help of the "ball-writing principle" working fixing device 14, wherein the FIG. 8 the closed position of the slats 10 and the FIG. 9 the open position shows. Clearly visible from the figures, the recessed, heart-shaped cam 26, in which the control pin 38 of the support arm 25 engages.

The FIG. 10 The block 32 illustrates a commissioning of the air inlet 1. It may be an electrical switch S, which may also be designed as a light switch, for example in a windowless room. If the light is turned on in the room, so the air outlet 1 is turned on, ie, his fan 5 promotes and the Slat closure 9 opens. Additionally or alternatively, a radio switch F may be provided and / or certain sensors Z, which allow commissioning or switching off. N is an electrical network that provides the energy for the operation of the air outlet 1. The network N is to be considered, for example, if a power failure occurs during operation. An orderly procedure is required after the return of the network (this will be discussed in more detail below). The block 33 represents the electronic control circuit 15 which can turn an electric motor 31 (block 34) of the fan 5 on and off. Further, the control circuit 15 communicates with a block 35, which represents the actuator 12 for the slats 10. The block 35 is operatively connected to the block 36, which represents the fixing device 14. The block 37 identifies the sensor 29 and the counter-element 30, that is to say the position detection of the shutter 8, active connections to the control circuit 15 and to the fixing device 14.

In normal operation, the air intake 1 according to the FIGS. 1 to 10 the following function: If the air inlet 1 is turned on (for example by means of an electrical switch S, so on the one hand, the electric heating element 19 and on the other hand, the electric motor 31 of the fan 5 is connected to electrical voltage, whereby the bimetallic actuator 18 is activated and the air delivery through the fan 5, by heating the bimetallic actuator 18 by means of the heating element 19, the strip-shaped bimetallic actuator 18 curves in such a way that the spool valve 20 out of the FIG. 1 prominent position in the from the FIG. 2 apparent position is displaced by longitudinal displacement, with the result that the control arms 21 pivots and thereby the lamellae 10 from the closed position are shifted to the open position. The conveyed by the fan 5 air flow can thus - sucked over the nozzle-shaped portion 4 of the housing 2 - are blown out of the open fin shutter 9, for example, to blow air into a room. Of course it is also possible to suck air from a room. In the latter case, it is merely necessary to ensure that the fan 5 has a reverse direction of rotation. Such an air inlet then becomes an air outlet. The electronic control circuit 15, which has the timer 39, energizes the electric heating element 19 only a predetermined time T1. If this time has expired, the heating element 19 is turned off and therefore no longer consumes electrical energy. Nevertheless, there is no closing of the slats 10 due to the function of the fixing device 14. The functional sequence of the fixing device 14 is as follows: If the slat closure 9 is in the closed position according to FIG FIG. 1 , so the control pin 38 of the support arm 25 is located at the point a of the cam 26 ( FIG. 7 ). During the opening operation of the fins 10 of the control pin 38 along the control cam 26 from the point a to the point b and then - when "overstretching" in the open position - moved to the point c. At the point c, the opening angle of the slats 10 is greater than 90 °, this is the position according to FIG. 5 , This position is maintained as long as a heating of the Bimetallaktuators 18 takes place by means of the electric heating element 19. When the time T1 has elapsed, the electric heating element 19 is turned off (time T2) and the bimetallic actuator 18 cools down, with the result that its curvature decreases, that is, the spool 20 can move backwards, holding the holding arms 25 and Consequently, the control pin 38 entrains, due to the stage However, between the point b and the point c of the cam 26 does not return to the point b, but is passed to the point d. Here, the control pin 38 is caught in a seat-like manner, that is, the lamellae 10 that have receded into a 90 ° opening position are fixed in this position, without the need for current supply to the actuating device 12. The de-energized state of the heating element 19 and thus the cooling of the Bimetallaktuators 18 means that it leaves its attachment to the fixed spool 20 and returns to its original position, that is, it takes its original position again. In all embodiments of the invention, however, can also be provided that the Bimetallaktuator 18, in particular the operating member 13, is connected to the spool 20, whereby the parts mentioned in the cooling do not separate from each other, but remain connected. In such a case, the cold bimetallic actuator 18 maintains its curved position as long as the spool 20 is fixed. Thus arises between the spool 20 and the corresponding end portion of the strip-like Bimetallaktuators 18 a space. The gravity and / or the helical compression spring 24 ensure that the lamellar closure 9 maintains a stable open position. If, after a certain period of operation, the air inlet 1 should now be switched off, then the mentioned switch S is actuated, with the result that the electronic control circuit 15 again operates the electric heating element 19 (heating resistor) for the time T1 and the electric motor 31 of the fan 5 is switched off becomes. By operating the electric heating element 19, the Bimetallaktuator 18 moves back up against the front end of the spool 20, whereby this again assumes the overstretched position, that is, the control pin 38 is from the point d to the point e of the cam 26th emotional. After expiration of a predetermined time of the timer 39 T1, the electric heating element 19 is turned off (time T2), so that the curved bimetallic actuator 18 cools and thereby a displacement of the spool 20 to the starting position according to FIG. 1 allows, with the result that the fins 10 are closed, in this process, the control pin 38 is displaced from the point e to the point f and finally to the point a. He returns to its original position and can start at a renewed switching on the air inlet 1 to go through the cam 26 again.

The FIG. 11 illustrates the operation of the timer 39. For example, the heating time T1 can be three minutes and the cooling time T2 fifteen minutes. The periods of H marked periods of FIG. 11 indicate that the aforementioned sensor 29, which is designed in particular as a Hall sensor, is active. This will be discussed in more detail below.

The normal operation explained above is in the table of FIG. 12a under number 1 again. According to 1.1, the switch S is turned on, whereby the motor of the fan 5 is turned on and also the damper drive, namely the actuator 12, taken for the period T1 in operation (energized), so that the holding mechanism, so the fixing device 14, with respect the cam 26 the way 1 '(see FIG. 7 ) goes through. The trained as a Hall sensor sensor 29 is active at power on for a few milliseconds and is inactive during the time T1. The slats 10 are moved to a position in which they are open and overstretched. After elapse of the time T1, the timer 39 switches the electric actuator 12 (damper actuator) from (de-energized), so that the bimetallic actuator 18 cools, with the result that the holding mechanism (fixing device 14 with heart curve in accordance with FIG. 7 ) and the control pin 38, the holding position 2 '( FIG. 7 ) occupies. If the time T2 has expired, the Hall sensor is active and the slats 10 are in the "permanently open" position. If the switch S is actuated to switch off, the motor of the fan 5 is switched off and the flap drive is switched on for the time T1, with the result that unlocking of the holding mechanism takes place. When the flap drive is switched on, the Hall sensor is briefly activated and is then inactive during the time period T1. The slats 10 are moved from the open position (90 °) in the overstretched position (> 90 °). If the time period T1 has expired, the time T2 follows, that is, the switching off of the electric heating element 19, so that the bimetallic actuator 18 returns to its original position, that is, the control pin 38 passes through its return path 3 '(FIG. FIG. 7 ). After time T2, the Hall sensor is active and the fins 10 are in the closed position. Thereafter, the arrangement is in the operating position "standby", in which the engine and the valve drive are turned off, the holding mechanism, so the fixing device 14, is in the waiting position, the control pin 38, the position 4 '( FIG. 7 ) occupies. The Hall sensor is active and the fins 10 are closed.

In the same way, special situations are described below, which deviate from the above normal operation, so below only described in relation to the normal operation event, but in principle, the statements on the normal operation is referenced.

According to section 2 of the FIG. 12a It is assumed that during the heating phase of the heating element 19 when opening the louver closure 9, a power failure, so the failure of the power grid occurs. According to FIG. 2.1, it can be seen that the time T1 does not expire due to the power failure, so that the control pin 38 does not complete the outward passage 1 ', but returns to the standby position 4' and the slats 10 again assume the closed position. If then, according to 2.3, the power supply, the fan 5 is turned on and the control circuit 15, in particular the timer 39, supplied for the period T1, the damper drive, which takes place at the mains return due to the Hall sensor, which recognizes that due to its short activation despite the switch S in the "on" position, the lamellar shutter is in the "flap closed" position, ie in the closed position, and therefore the opening movement is carried out when the power returns. The closure 8 is spent until the position "permanently open". If then a deliberate switching off according to section 2.4, the air outlet 1 is returned to the closed position, as described above in normal operation.

In paragraph 3. according to FIG. 12a . 12b the case is described that there are short switching intervals, that is, the air inlet 1, so the device is turned on again during the closing phase of the fins 10. The basic switching is carried out by the user 1, who closes this again after opening the lamella closure 9, wherein during the closing phase, another user (user 2) again performs an intervention. The result is the following: The user 1 turns the device on (3.1) and then, after the slats 10 have reached the position "permanently open", again (paragraph 3.2). While the lamella closure 9 in Closing process is located, the user 2 switches the switch S again according to Section 3.3. The present state is recognized by the short activation of the Hall sensor insofar as it recognizes the position "flap closed" (even if the closing end position has not yet been reached). In this respect, the motor of the fan 5 is turned on and the actuator 12 is energized for the period T1 so that the slats open again. In this case, the control pin 38 moves back via the return path 3 '(FIG. FIG. 7 ), since the waiting position 4 'has not been reached. However, the control pin 38 does not reach the position d due to the step between the point e and the point d. If the time T1 has expired, the timer 39 switches off the heating element 19 (time T2) so that the lamellae 10 are closed again, the control pin 38 moving via the return path 3 'into the waiting position 4'. Since the Hall sensor is activated after expiration of the time T2, it recognizes the "flap closed" position, although the switch S has the "on" position. This causes a switch on the motor of the fan 5 and an activation of the actuator 12 until the slat position "permanently open", as already described in normal operation. If the user 2 now switches off the switch S according to point 3.5, then the same situation as described in normal operation, that is, the air outlet 1 closes and then goes into the operating phase "Standby".

According to the Figures 12b . 12c is under 5. another situation "short switching intervals" illustrates, namely the air outlet 1 is turned off during the opening phase. This results in that the end position of the way 1 'is not reached by the control pin 38, so that the blades 10 close again, the Hall sensor after closing by its short activity, the position "flap to "detects, wherein the control circuit 15 detects the switch position" off ", so that can be moved to the standby position in accordance with 5.3, as far as normal conditions exist, which require no further activity.

In case 6 of the FIG. 12c is a power failure during the so-called unlocking phase shown, so when the control pin 38 actually from point d to point e ( FIG. 7 ) should go over. Thus, the switch S is switched to "off", so that the air inlet 1 should actually be closed, while, so without the time T1 has expired, but the power failure occurs, with the result that it does not come to overstretching the slats 10, Unlocking position can therefore not be taken and therefore remain in accordance with 6.2, the slats 10 in the open position. If the mains return now occurs, the briefly activated Hall sensor detects the position "flap on", but the control circuit 15 senses that the switch S is in the "off" position. This has the consequence that the damper drive is activated, that is, there is a heating of the heating element 19 for the period T1, so it now comes to unlocking and overstretching. Thereafter, during the period T2, the heating element 19 is turned off, so that the control pin 38 through the return path 3 'and finally after closing the slats 10 is the standby operating position.

From all of this it is clear that in conjunction with the sensor 29, which senses the position of the counter element 30 and thus the position of the fins 10, and in conjunction with the timer 39 and the electronic control circuit 15 and in particular the query of the position of the switch S of Normal operation according to Item 1 of the table and the various special conditions according to items 2, 3, 4, 5 and 6 of the table in accordance with FIGS. 12a to 12c can be effected.

The Figures 13 and 14 illustrate a further embodiment of the invention, wherein the embodiment according to the FIGS. 1 to 9 Reference is made, as compared to this first embodiment, the embodiment of Figures 13 and 14 differs only in terms of the configuration of the fixing device 14. In the embodiment of the Figures 13 and 14 the fixing device 14 is a functional unit connected to the control circuit 15, which guides a locking pin 40 longitudinally displaceable (double arrow 41), wherein the longitudinal extension of the locking pin 40 extends transversely to the longitudinal extension of the control slide 20. Is the locking pin 40 in the position according to FIG. 13 , so the locking slide 20 can be moved by the actuator 12. Is the locking pin 40 according to FIG. 14 in a locking opening 42 of the spool 20 hineinverlagert, so the spool 20 is fixed, which is in this fixing position of the fin shutter 9 in the open position, the maintenance of this fixing position no energy, in particular no electrical energy required. Otherwise, the comments on the exemplary embodiment of FIGS. 1 to 9 according to the embodiment of the Figures 13 and 14 ,

The FIGS. 15 to 20 show a further embodiment of the invention, wherein the embodiment according to the FIGS. 1 to 9 Reference is made, as compared to this first embodiment, the embodiment of FIGS. 15 to 20 differs only in terms of the configuration of the fixing device. In the embodiment of the FIGS. 15 to 20 the fixing device 14 is a fixing device operating on the "ballpoint pen principle". It has a rotational locking member 45 rotatably mounted about an axis of rotation 44, which is held or biased by means of a spring means 46 in at least one preferred rotational position. Furthermore, the fixing device 14, a control member 47 which is arranged on the spool 20 which actuates the blades 10 of the shutter 8. The spool 20 is coupled to an operating member 13 which is driven by an electric actuator 12. The electrical actuator 12 has - according to the embodiment of FIGS. 1 to 9 - A bimetallic actuator 18 with electric heating element 19 on (in FIG. 15 not visible).

According to FIG. 16 the rotary locking member 45 is designed approximately H-shaped in plan. It is designed plate-shaped with preferably the same thickness and has four corners 48 to 51, two side edges 52 and 53, which are preferably rectilinear and side edges 54 and 55 which lie between the corners 48 and 49 and 50 and 51 and recesses 56 and 57 form , The axis of rotation 44 is formed by a housing-side stud bolt 58. The spring device 46 has a helical compression spring 59, which is supported with one end 60 on the housing 2 and the other end 61 carries a preferably dome-shaped pressure piece 62, which acts on the rotational locking member 45 due to the spring force of the spring means 46. The control member 47 has a control edge 63 and a control edge 64, wherein the two control edges 63 and 64 form an angle with each other, which is preferably about 90 °. The control edge 64 is adjoined by a further control edge 65, which forms an obtuse angle with the control edge 64.

The result is the following function. The closure 8 is in its closed position according to the FIGS. 15 and 16 , so formed between the control edge 64 and 65 corner 66 of the control member 47 is spaced from the side edge 52 and the corner 48 of the rotary locking member 45. The rotary locking member 45 has the from the FIG. 16 resulting preferred rotational position, which is brought about by the fact that the pressure piece 62 is retracted into the recess 57 due to the spring action of the spring means 46. Will - according to FIG. 17 - By means of the electrical actuator 12 of the spool 20 in the overstretched position displaced (arrow 70), it encounters the corner 66 of the control member 47 against the side edge 52 of the rotary locking member 45, so that the latter rotated by a small angular amount in a clockwise direction, but then due to Spring device 46 turns back again as soon as the control member 47, the rotary locking member 45 according to FIG. 17 happened. Now, if the electrical energization of the actuator 12 is turned off, then moves - according to FIG. 18 - The control member 47 back (arrow 71), wherein a corner formed by the control edges 63 and 64 67 enters the recess 56 and in this way, the rotary locking member 45 rotates a small angular range in the counterclockwise direction. Further, since the corner 49 of the rotary locking member 45 against the control edge 64 of the control member 47, the position of the control member 47 and thus the position of the spool 20 is fixed, that is, the blades 10 of the shutter 8 are in the open position and are in this position fixed. By the mentioned rotation of the rotary locking member 47 counterclockwise, the pressure piece 62 exits from the recess 57 and is biased to the side edge 52 in the region of the corner 51 of the rotary locking member 45 at.

Target - according to the Figures 19 and 20 - The shutter 8 are closed again, the previously switched off electrical actuator 12 is turned on again, whereby the control member 47 is again shifted (arrow 72), that in the slats 10, the overstretching exists. This is from the FIG. 19 forth; the stiffening ribbed undersides of the fins 10 are visible. When displacing the control member 47 to achieve the overstretched position leave the corner 67 and the control edge 64, the recess 56 and the corner 49 of the rotary locking member 45, so that the rotary locking member 45 is rotated counterclockwise due to the spring pressure of the spring means 46, that is, it is the rotational position according to FIG. 19 accepted. Now, if the electrical actuator 12 is turned off, so that the spool 20 moves back to the starting position (arrow 73), then the voltage applied to the side edge 53 corner 67 of the control member 47, the rotary locking member 45 in the counterclockwise direction, wherein the rotational movement takes place so far that the pressure piece 62 snaps into the recess 56 of the rotary locking member 45, so again a starting position according to FIG. 16 is present. In this process, the rotary locking member 45 has rotated by 180 °. Since it is designed the same on opposite sides, now the process can start all over again.

From all of this it is clear that the open position of the lamellae 10 of the closure 8 is held by the fixing device 14, without energy, in particular electrical energy, having to be applied for this purpose.

Claims (17)

Air inlet or outlet, with an air passage opening, which is associated with a closure, which can be brought into an open and a closed position by means of at least one operating element driven by an electric actuator, characterized by a closure (8) without maintaining the electrical current supply the actuating device (12) in the open position holding, to the actuating device (12) and the operating member (13) separate fixing device (14). Air inlet or outlet according to claim 1, characterized in that the fixing device (14) for bringing about its fixing position or release position has its own electric drive or by the actuating device (12) is driven directly or indirectly with. Air inlet or outlet according to one of the preceding claims, characterized in that the fixing device (14) is a fixing device (14) operating on the "ballpoint pen principle" or on the "locking principle". Air inlet or outlet according to one of the preceding claims, characterized in that the actuating device (14) for the opening of the closure (8) and for closing the closure (8) causes the same movement of the operating member (13). Air inlet or outlet according to one of the preceding claims, characterized by an electronic timer (39) for at least one preferably adjustable default time of the electrical energization of the actuating device (12). Air inlet or outlet according to one of the preceding claims, characterized in that the closure (8) has at least one air flap, in particular a plurality of louvers (10) formed as louvers. Air inlet or outlet according to one of the preceding claims, characterized in that the actuating device (12) causes a linear movement of the actuating member (13). Air inlet or outlet according to one of the preceding claims, characterized in that the actuating device (12) has at least one Bimetallaktuator (18) with at least one electric heating element (19), at least one electromagnetic actuator or at least one electric linear drive. Air inlet or outlet according to one of the preceding claims, characterized by an electronic control circuit (15) having at least one sensor (29) for detecting the position of the closure (8). Air inlet or outlet according to one of the preceding claims, characterized as a structural unit with at least one electric fan (5). Air inlet or outlet according to one of the preceding claims, characterized in that the fixing device (14) operating according to the "ballpoint pen principle" has a closed position Control cam (26), in particular a heart curve, along which a control pin (28) of a spool (20) of the closure (8) is movable or that the "ballpoint pen principle" working fixing device (14) at least one preferred rotational position engaging rotary locking member ( 45) which cooperates with a control member (47) of the spool (20) of the closure (8). Air inlet and outlet according to one of the preceding claims, characterized in that the fixing device (14) operating according to the "locking principle" has a displaceable locking pin (40) cooperating with the control slide (20) of the closure (8). Method for actuating a closure (8) of an air inlet or outlet (1), in particular according to one or more of the preceding claims, wherein the closure (8) by means of at least one of an electrical actuator (12) driven control member (13) in a Open and in a closed position is displaced, characterized by the following steps to bring about the open position of the closure (8): - Electric energization of the actuating device (12) for driving the operating member (13) for displacing the closure (8) in the open position and - To the actuating device (12) and the operating member (13) separately successful fixing the open position of the closure (8) and switching off the energization of the actuating device (12). A method according to claim 13, characterized in that the operating member (13) for opening the closure (8) is moved from a rest position into a Verlagerungsendstellung and that after fixing the open position of the closure (8) the operating member (13) in the rest position in particular is returned energizing free. Method according to one of the preceding claims, characterized in that the operating member (13) for closing the closure (8) from the rest position in the Verlagerungsendstellung and after the cancellation of the fixation of the closure (8) back into the rest position under actuation of the closure (8 ) is moved in the closed position in particular energization free. Method according to one of the preceding claims, characterized in that the actuating device (12) for bringing about the open position and the closed position of the closure (8) is energized in each case for a predetermined time. Method according to one of the preceding claims, characterized in that the respective position of the closure (8) senses and an electrical control circuit (15) the sensed closure position is transmitted.

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